Added conveinence methods to the posts request class (#61)
Added conveinence methods to the posts request class (#61)

Includes squashed commits:

- #61 - Updated comments to match existing documentation style.
- Removed Double quotes in code.
- Fixing styles to match project styles.

WP-API/node-wpapi,brad-decker/wordpress-rest-api,brad-decker/wordpress-rest-api,WP-API/node-wpapi,kadamwhite/wordpress-rest-api,kadamwhite/wordpress-rest-api,kadamwhite/wordpress-rest-api